Thanks all, such speedy replies! Looks like a single is the way to go!
Mefifi, I can just see dd liking an 'exciting' duvet set! They seem to have some lovely ones in the Next directory at the moment.
MoaningMinnie, I am inclined to agree that toddler beds seem a bit pointless, especially when you start to consider a special size mattress & bedding, even though they look cute. I had thought of putting a gate on her bedroom door actually. We intend to move her into her own room before the new one moves into the cot bed, so hopefully she won't be too miffed!
Lindsell, those Dream tubes look good, but I read a few reviews about punctures, not sure if this could be an issue?
Wearymum, I agree that it would probably be best to move dd before the new baby arrives, but it just feels a bit soon for us (plus I might get a bit emotional about her leaving the nursery!). A folding bed rail is what I had in mind, can I ask what one you use? It's sweet that your dc wait to be 'collected' in the morning, fingers crossed dd will be like this! At the moment, she will happily lie in her cot awake for a while in the mornings, happily chattering or singing to herself!
Waswondering, if we weren't having another, I could easily imagine dd staying in her cot bed until age 6, she's not even half the length of it at the moment! She's going to look lost in a 'real' bed!
Actually, I think she'll probably be excited about the whole thing, she loves getting onto our bed when I'm getting ready in the mornings, & snuggling herself under the duvet!